Fountain pen



J. BARKER FOUNTAIN PE Filed Sept, 10

11v VENTOR fa/77m; flaw/far MTORNEYS 5 y B w 5 4 0 Patented Feb. 2,1926.

UNITED STATES JAMES BARKER, OI KALAMAZOO, EICHIGAN.

FOUNTAIN PEN.

Application filed September 10, 1925. Serial No. 55,551.

To all whom it may concern:

fountain pen.

Be it known that I, James BARKER, a citizen of the United States,residin at the city and county of Kalamazoo, tate of Michigan, haveinvented certain new and useful Improvements in Fountain Pens, of whichthe followin is a specification.

This invention re ates to improvements 1n fountain pens.

' The main objects of this inventlon are to provide an improved fountainpen in which the cap is securely retained upon the barrel and at thesame time may be readily removed as occasion requires.

Objects relating to details and economies of construction and operationof my invention will definitely appear from the detailed description tofollow.

I accomplish the objects of my invention by the devices and meansdescribed in the following specificationf The invention is clearlydefined and pointed out in the claims. A structure which is a preferredembodlment of my invention is clearly illustrated in the accompanyingdrawing, forming a part of this application, in which:

Fig. 1 is a side view of my improved Fig. 2 is a detail view with thecap in section on a line corresponding to line 2-2 of Fig. 1.

Fig. 3 is a transverse section on a line corresponding to line 3-3 ofFig. 2.

Fig. i is a detail view partially in section with the cap arranged uponthe outer end of the barrel.

Fig. 5 is a perspective view of the locking detent and its supportingspring.

Fig. 6 is a detail view partially in section of a modified form orembodiment of my invention.

Fig. 7 is a transverse section corresponding to that of Fig. 3 showinganother modification or embodiment of my invention.

In the drawing "similar reference characters refer to similar partsthroughout the severalviews, and the sectional views are taken lookingin the direction of the little arrows at the ends of the section lines.

Referring to the drawing, 1 represents the barrel of my improvedfountain pen which is provided with an annular groove 2 in spacedrelation to the inner end thereof and an annular groove 3 in spacedrelationto its outer end.

' The cap 4, in the embodiment illustrated,

is internally threaded at 5 to enga 9 threads 6. These threads, however,may dispensed with, with satisfactory results. The cap has an annularroove 7 therein and a hole 8 aligned with t e groove in the barrel whenthe cap is arranged on either eud of the barrel.

A detent carrying spring 9 in the form of a split ring with overlappingends is arranged 111 the groove 7 of the cap, the inner end of thespring having a hole 10. therein through which a detent '11 secured tothe outer end of the spring is disposed, this detent pro ecting througha sole 8 in the cap to engage the groove in the barrel therebyeffectively securing the cap in position. The detent has a head 12 atits inner end so that it cannot be pulled through the hole 10 in theinner end of the spring, the head serving as a retaining means for thespring.

The end 13 of the spring serves as a finger piece to facilitate indisengaging the detent from'the groove permitting the re moval of thecap.

In the modificationshown in Fig. 6, the

cap 14 is provided with a combined. pocket 011p and detent carryingspring 15 disposed longitudinally of the cap, the detent 16 beingsecured on the inner end of this spring to project through a hole 17 inthe cap into engagement with the grooves in the barrel.

In the modification shown in Fig. 7, the retaining ring 18 embraces thecap and has outwardly projecting ears 19 thereon in which the lever-likedetent carrying member 20 is pivoted, the detent 21 projecting through ahole in the ca to engage the groove, the outer end of this lever 20 beinengaged by the end 22 of the band 18 whic constitutes a spring forholding the detent;

in engagement.

I have not attempted to illustrate or describe other embodiments'oradaptations of my invention as I believe the disclosure made will enablethose skilled in the art to embody or adapt my improvements as may I bedesired.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is: i v

1. In a fountain en, the combination with the barrel provided with anannular groove spaced from the end thereof, of a cap adapted totelescope with said barrel, said cap'having an, annular groove and ahole therethrough registering with said grooves when the cap is-e'ngagfdupon thebarrel, an annular spring aving overla ping ends arranged insaid groove in sea cap, '"and a headed detent secured to the outer end 8of said spring and arranged through -an openin in the inner end thereofto pro ect throng said hole in said cap into said barrel groove fordetachablysecurmg the cap upon the barrel.

2. In a fountain n, the combination with the barrel provided with anannular groove spaced from the end thereof, of a 'cap adapted totelescope with said barrel, said cap having a hole therethrough reg1s 1terin with said grooves when the cap is en- 'gagedupon the barrel,anannular spring having overlapping ends embracing vsaid cap, and aheaded detent secured to the 'outer end of said spring and arrangedthrough an opening in the-inner end thereof to project through said holein said cap to engage said groove for detachably the cap upon thebarrel.

3. In a fountainv pen, the combination with the barrel provided with anannular groove spaced from the end thereof, of a cap adapted totelescope with said barrel, said cap having aholetherethrough'registering with said grooves when the'cap is en-'gaged upon the barrel, an annular spring embracing said cap, and adetent secured to one end of said spring and arranged to prosecuring4.'In a fountain pen, the combination 5 with the barrel having anadjacent the end thereof, of a-cap adapted to telescope with said barreland having a hole therein aligned with said groove when the cap is inposition, and a detent carrying spring secured with a detent arrangedthrough said hole therein to detachably engage said groove.

5. In a fountain pen, the combination of the barrel having an annulargroove adjacent one end thereof, a ca adapted to telescope with saidbarrel an having an opening therein registering with said groove whenthe cap is in position, and a spring pressed detent arranged throughsaid open-' ing in said cap to engage said groove.

6. In a fountain pen,

the combination annular groove to said cap and provided with the barrelhaving a recess adjacent one end thereof, of a cap adapted to telescopewith said barrel and having an opening therein registerin with saidrecess when the cap is in positlon, and a detent mounted on said cap toproject through said opening therein to engage said recess. J

In witness whereof I have hereunto set my hand." I

JAMES BARKER.

